Warning against preupgrade

[Kevin Bowling]

On 6/25/2009 4:36 AM, Alan Cox wrote:
> On Thu, 25 Jun 2009 04:07:07 -0700
> Kevin Bowling<kevinb at analograils.com>  wrote:
>
>    
>> 2 out of 5 failures.  F10->F11 is completely unusable for any kind of
>> "uncommon" setup, i.e. LDAP login, Linux RAID, Xen DomU.  Anything other
>> than one IDE hard disk with default layout really.
>>      
>
> 2 out of 5 ? - I got 3 out of 4 fails including hitting error paths that
> clearly were not tested because the error printing code didn't work but
> spewed python traces - and yes its in bugzilla already.
>    
One of the "success" required manual heavy lifting.  F11 Xorg didn't 
like the R100 radeon in my IBM x3650 server and absolutely crawled.  
After two DAYS I interrupted and rebooted the box before it was done 
doing package cleanups.  Some careful work manually sorting out the mess 
seemed to get it going.

preupgrade-cli should not use a frame buffer of any type.  Think about 
TTY-only devices, or server BIOS that redirect console to ethernet/serial...

Anyways, be careful!  Clearly not for the average user, and woefully 
under-tested.
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